Yohkoh/SXT observations and models for an eruptive flare

Conference · Wed Jan 01 04:00:00 EST 1992 · American Astronomical Society, Bulletin; (United States)

OSTI ID:6627404

Martens, P C.H.; Tsuneta, S ^[1]

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1. Univ. of Tokyo (Japan)

On Dec. 2, 1991 Yohkoh/SXT obtained a unique sequence of high quality X-ray images of what appeared to be a plasmoid ejection and two-ribbon flare, viewed in cross-section on the Solar limg. We will show a movie displaying the preflare plasmoid formation, the eruption of the plasmoid followed by the onset of the flare, and finally what appears to be the formation of postflare loops in a quadrupole type field configuration. We have modelled this sequence of events with a simple Martens-Kuin circuit approach, approximating the plasmoid/filament as a line current, added to a background field consisting of three line-dipoles. Overlays of the X-ray movie with the calculated magnetic field morphology show excellent agreement, and thus lend further credibility to the two-ribbon flare scenario developed by Carmichael, Sturrock, Hirayama and many others thereafter. X-ray imaging may be applied to other types of physical research.

• OSTI ID: 6627404
• Report Number(s): CONF-930189--
• Conference Information: Journal Name: American Astronomical Society, Bulletin; (United States) Journal Volume: 24:4
• Country of Publication: United States
• Language: English

Related Subjects

440100* -- Radiation Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
661320 -- Auroral
Ionospheric
& Magnetospheric Phenomena-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTER CALCULATIONS
DATA
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
IMAGES
INFORMATION
IONIZING RADIATIONS
MONITORING
MULTIPOLES
NUMERICAL DATA
PLASMOIDS
QUADRUPOLES
RADIATIONS
SOLAR ACTIVITY
SOLAR FLARES
SPACE VEHICLES
VEHICLES
X RADIATION